@spec all(WardrikStore.t()) :: [{String.t(), String.t()}]

Returns every stored trigger as {agent_id, name}.

@spec delete(WardrikStore.t(), String.t(), String.t()) :: :ok | {:error, term()}

Deletes trigger name of agent_id.

@spec lookup(WardrikStore.t(), String.t(), String.t()) ::
  {map(), WardrikStore.vsn()} | nil

Returns the record for trigger name of agent_id and its version, or nil.

@spec next_at(map()) :: DateTime.t() | nil

Returns the record's next run, or nil for a webhook.

@spec of(WardrikStore.t(), String.t()) :: [String.t()]

Returns the trigger names of agent_id.

@spec put(WardrikStore.t(), map(), WardrikStore.vsn() | nil) ::
  :ok | {:error, :conflict | term()}

Writes record if the stored version is vsn. Pass nil to create it.

Returns {:error, :conflict} if the version differs.

@spec trigger(map()) :: WardrikTriggers.Trigger.t()

Returns the record's trigger.

@spec update(WardrikStore.t(), String.t(), String.t(), (map() -> map())) ::
  :ok | {:error, term()}

Updates the record with fun. Retries on a conflicting write.

Returns {:error, :not_found} if there's no record.